A \(0.80\) km\(^2\) agricultural watershed has a slope of \(0.30\%\) and the maximum length of travel of water is \(1\) km. The \(10\)-year maximum depth of rainfall is tabulated below:
| Duration (minutes) | 5 | 10 | 20 | 30 | 40 | 60 |
|---|
| Maximum depth of rainfall (mm) | 16 | 24 | 39 | 50 | 60 | 65 |
Half of the watershed has row crops (runoff coefficient = \(0.40\)), whilst the other half of the watershed has pasture (runoff coefficient = \(0.35\)). The peak flow rate for the watershed (in m\(^3\)/s) for the \(10\)-year return period is ________. (Rounded off to two decimal places)